I. "Blind person" means a person whose central acuity does not exceed 20/200 in the better eye with correcting lenses or whose visual acuity, if better than 20/200 is accompanied by a limit to the field of vision in the better eye to such a degree that its widest diameter subtends an angle of no greater than 20 degrees. In determining whether an individual is blind, there shall be an examination by a physician skilled in diseases of the eye, or by an optometrist, whichever the individual shall select.II. "Blind services" means the administrative unit for the blind services program within the bureau of vocational rehabilitation, department of education.III. "State property" means any building or land owned, leased or controlled by the state.IV. "Vending facility" means a vending machine, cafeteria, snack bar, cart service, shelter, counter or any other facility for the vending of newspapers, periodicals, confections, tobacco products, foods or beverages, or any combination of them, whether dispensed automatically or manually, and which are prepared on or off the property. V. "Vending machine income" means receipts other than those of a blind licensee from the operation of vending machines on state property, after cost of goods sold, where the machines are operated, serviced or maintained by, or with the approval of the state, or commissions paid other than to a blind licensee by a commercial vending concern which operates, services or maintains vending machines on state property for, or with the approval of the state.